NASA Astronomy Picture of the Day 9 April 2023: 3000 light years away, a mysterious Nebula
A nebula is a massive cloud composed mainly of hydrogen and helium gas along with dust. Nebulae can originate from the debris ejected by a dying star, like a supernova, or from areas where new stars are taking shape, earning the name "star nurseries." While the dust and gases in a nebula are widely dispersed, gravity can still cause them to come together to form larger clumps. As these clumps increase in size, their gravitational force also becomes more potent.There are several types of nebulae. However, on a wider…